Check the listing for details. Crinoid Fossils Box FULL Fort Payne Formation TN Mississipian Period. Condition: New. Listed at 35.00 USD. FOSSIL BOX! Packed with care & Packed full. Fossils shown are an example of what will be in a box. Box Size: 11”x8.5”x5.5” Hand sourced / Ships from USA Fossil ID and period confirmed by geologists at the State of Tennessee. Fort Payne Formation (Geologic Period = Mississippian Period) Tennessee & Kentucky Crinoids ("sea lilies") are sessile, benthic, filter-feeding, marine invertebrates that were abundant in Paleozoic oceans. The group nearly went extinct at the Permian-Triassic mass extinction 251 million years ago

$21.00
$35.00